Clarion's GR10BT is built to withstand the harsh and wet environment of marine usage, by virtue of an IPX5 rated water-resistant front panel and IPX3 rated chassis. Buttons positioned along the rim of the circular face enable quick, stress-free access to functions. What's more, the oversized LCD display offers clear visibility during day or night. The high-contrast LCD display enables you to quickly confirm details like the song title or artist name, at a glance. Built-in Bluetooth provides stereo streaming with a wide variety of Bluetooth compatible devices. Play music stored on your connected Bluetooth device, whether it's a smart phone or tablet, with wireless convenience (Please check for compatible mobile phone models). Equipped with USB pigtail, it's easy to connect a variety of sources. Just connect, and you can even use it to automatically charge your smartphone. Also, this enables playback of music files stored on a USB memory device as well as smartphone. The USB slot supports the playback of MP3 and WMA format audio files. So just save your favorite music files onto a USB memory device and plug it in to bring the music onboard. Frequency bands FM/AM/Weather Band FM Tuner with RDS Frequency Range: 87.9 - 107.9MHz (0.2MHz STEP) AM Tuner Frequency Range: 530 - 1710kHz (10kHz STEP) Weather Band NOAA Frequency Range 162.400MHz - 162.550MHz AUDIO Maximum Power Output: 45W × 4 Low Pass Filter (Subwoofer) (80/120/160/Through) GENERAL Chassis Dimensions (W × D) (mm) 103 x 96 Low Consumption Mode as Power Off: ACC Off - zero current draw, Standby Mode (Power Off & ACC On)